参数资料
型号: DS1884T+
厂商: Maxim Integrated Products
文件页数: 19/92页
文件大小: 0K
描述: IC SFP PON ONU CTRLR 24TQFN
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
产品变化通告: DS1884 Series Discontinuation 03/Aug/2012
标准包装: 28
系列: *
DS1884
SFP and PON ONU Controller
with Digital LDD Interface
26
Maxim Integrated
Digital I/O Pins
Five digital inputs and three digital output pins are pro-
vided for monitoring and control.
LOS, LOSOUT
By default, the LOS pin is used to convert a standard
comparator output for loss of signal (LOS) to an open-
collector output (LOSOUT). The status of LOS can be
read in the STATUS byte (A2h Lower Memory, Register
6Eh) as the RXL bit. The RXL signal can be inverted (INV
LOS = 1) before driving the open drain output transistor.
RSEL
The level of RSEL can be read by reading the STATUS
of RSEL determines whether SETLOSL or SETLOSH is
written to the MAX3945 register SET_LOS.
TXD, TXDOUT
TXDOUT is generated from a combination of TXFOUT
and TXD (see the CNFGC register A2h Table 02h,
Register 8Bh for enabling these options). A software
control identical to TXD is available (TXDC, A2h Lower
Memory, Register 6Eh). A TXD pulse is internally extend-
ed (tINITR1) to inhibit the latching of low alarms and
warnings. The intended use is a direct connection to the
MAX3710’s DISABLE input if this is desired. When VCC <
POA, TXDOUT is high impedance.
Figure 10. Logic Diagram 1
Figure 11. Logic Diagram 2
C
D
Q
S
R
OUT
IN
TXDS
RPU
TXFS
TXFOUTS
TXD
TXFINT
tINITR1
TXDC
VCC
TXD
TXDOUT
TXDIO
TXDFLT
FAULT RESET TIMER
(130ms)
IN
OUT
POWER-ON
RESET
PINS
INVTXF
TXF
TXFOUT
IN1S
IN1EN
IN1
RSEL
RSELS
3-WIRE
SET_LOS_3945
= PINS
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DS1886 制造商:未知厂家 制造商全称:未知厂家 功能描述:带有数字LDD接口的SFP和PON ONU控制器
DS1886_V1 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:SFP and PON ONU Controller with Digital LDD Interface
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